Index Catalog // ScholarsArchive@OSU

Removal of E. coli with alternative media Biosand filters

Creator:: Fulton, Nathan J.
Abstract:: When Biosand filters cannot be constructed with crushed quarry rock due to resource limitations, a suitable alternative filter media is needed. In this research, two crushed quarry rock alternatives were examined. Three bench-scale Biosand filters with crushed rock, beach sand, and heat-treated beach sand media were simultaneously dosed with Willamette...
Resource Type:: Masters Thesis
Full Text:: presented on August 16, 2012. Title: Removal of E. coli with Alternative Media Biosand Filters. Brian D

Experimental approach for the determination of lignin modification by manganese peroxidase

Creator:: Goby, Jeffrey D.
Abstract:: Degradation of lignin to simpler compounds is desirable for removing residual lignin during paper manufacture and accessing biomass carbohydrates for biofuel production, among other purposes. Lignin transformation using enzymes found in white rot fungi, some of nature's most efficient lignin-degrading organisms, offers a more environmentally benign, selective, and possibly less...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jeffrey D. Goby

Spatial and Temporal Variability of Heavy Metals (Lead, Copper, and Zinc) in Stormwater, Moss, and Street Dust in Portland, OR

Creator:: Bauer, Sophia O. A.
Abstract:: Lead (Pb), copper (Cu), and zinc (Zn) are known to have detrimental effects on aquatic and terrestrial ecosystems, and to human health both in rural and urban areas. Heavy metal contamination enters stormwater by atmospheric deposition and by the collection of surface particles during overland flow. Stormwater runoff in urban...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ Alyssa E. Shiel Lead (Pb

Addressing Persistent Challenges in Nanotoxicology Exposures : Techniques for in situ Characterization

Creator:: Crandon, Lauren E.
Abstract:: Nanoparticles (NPs), defined by their size (1-100 nm), are increasingly incorporated into commercial and industrial products due to their high surface area and unique properties. They can be designed for specific applications by manipulating composition, size, shape, and surface functionalization. As NP production and complexity increases, there is a need...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Lauren E. Crandon for the

Bacterial hydrophobicity : assessment techniques, applications and extension to colloids

Creator:: Saini, Gaurav
Abstract:: This research details laboratory assessment of bacterial hydrophobicity, variations in bacterial adhesion properties with growth and extended starvation as well as extension of this assay to colloidal hydrophobicity measurement. Hydrophobicity is an integral component of surface interactions and has been studied extensively for its role in a number of engineering...
Resource Type:: Dissertation
Full Text:: . Mark E. Dolan provided useful suggestions and helped with data analysis. Nicole Nasholm conducted

A multiscale approach to bacterial adhesion

Creator:: Ostvar, Sassan
Abstract:: This work is an attempt to develop a simple physical description for the initial interactions between a bacterial cell and a substrate surface. This is done by adopting a view that regards bacterial surface biomolecules not as secondary and add-on contributors to the potential energy function that characterizes the overall...
Resource Type:: Masters Thesis
Full Text:: committee members Drs. Dorthe Wildenschild and Jeffrey Nason for their invaluable feedback and comments on

Novel Approaches to Evaluate the Environmental Impacts of Nanomaterials

Creator:: Wu, Fan
Abstract:: Numerous studies have shown that some nanomaterials are highly toxic to aquatic organisms and can potentially disrupt overall community health; however, current methods to evaluate the nanomaterials environmental impacts rarely consider the environmental realism or provide sufficient detail on the impact at the community level. Here we demonstrate three approaches...
Resource Type:: Dissertation
Full Text:: members, Dr. Tyler Radniecki, Dr. Jeffrey Nason, Dr. Lewis Semprini, and Dr. Perry Hystad, I cannot

Sediment Deposition Characteristics in Shallow Saturation Excess Overland Flow with Application to Bioswales and Construction of a Novel Bioswale Design for Improved Contaminant Removal from Stormwater

Creator:: Wells, Jacqueline R.
Abstract:: Over the last two decades, urban stormwater management has grown to include green infrastructure, such as bioswales. These systems were primarily designed to mitigate hydraulic peaking during rainstorms but were also found to remove particulate and dissolved contaminants. However, little is known about the fate of these particulate contaminants after...
Resource Type:: Masters Thesis
Full Text:: ) Barbosa, A. E.; Fernandes, J. N.; David, L. M. Key Issues for Sustainable Urban Stormwater Management

Effects of silver ions and nanoparticles on suspended cells and biofilms of Nitrosomonas europaea

Creator:: Barker, Leila Kelly
Abstract:: Silver nanoparticles are increasingly being incorporated into consumer products due to their broad-spectrum antimicrobial properties. The resulting influx of silver nanoparticles into wastewater may pose a threat to bacteria involved in biological wastewater treatment. Ammonia-oxidizing bacteria, which convert ammonia to nitrite in the first step of nitrification, are highly sensitive...
Resource Type:: Masters Thesis
Full Text:: to disrupt the respiratory chain of E. coli, possibly by binding to thiol groups of NADH

Binding of bacterial lipopolysaccharide by the cationic amphiphilic peptide WLBU2 at interfaces

Creator:: Ryder, Matthew P.
Abstract:: Passage of blood through a sorbent device for removal of bacteria and endotoxin by specific binding with immobilized, membrane-active, bactericidal peptides holds promise for treating severe blood infections. Peptide insertion in the target membrane and stable binding is desirable, while membrane disruption and release of degradation products to the circulating...
Resource Type:: Dissertation
Full Text:: Appendix E: Matlab Code for Baseline Correction

ScholarsArchive@OSU

Removal of E. coli with alternative media Biosand filters

Experimental approach for the determination of lignin modification by manganese peroxidase

Spatial and Temporal Variability of Heavy Metals (Lead, Copper, and Zinc) in Stormwater, Moss, and Street Dust in Portland, OR

Addressing Persistent Challenges in Nanotoxicology Exposures : Techniques for in situ Characterization

Bacterial hydrophobicity : assessment techniques, applications and extension to colloids

A multiscale approach to bacterial adhesion

Novel Approaches to Evaluate the Environmental Impacts of Nanomaterials

Sediment Deposition Characteristics in Shallow Saturation Excess Overland Flow with Application to Bioswales and Construction of a Novel Bioswale Design for Improved Contaminant Removal from Stormwater

Effects of silver ions and nanoparticles on suspended cells and biofilms of Nitrosomonas europaea

Binding of bacterial lipopolysaccharide by the cationic amphiphilic peptide WLBU2 at interfaces

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